Bizfon 680 Box 4 Control Unit (BIZ-1684)

(Requires Bizfon 680 Boxes 1, 2 & 3 Control Units) Bizfon 680 Box 4 Control Unit Expansion Box - Adds 6 incoming phone lines and 8 extensions with voicemail, to 680 Boxes 1, 2 & 3. Includes 1 year warranty.
Features

• (Requires Bizfon 680 Box #1 Control Unit, Box #2 expansion unit and Box #3 expansion unit)
• Bizfon 684 Expansion Box #3 - Adds 6 incoming phone lines and 8 extensions with 2 hours of voicemail, to 680 Box  #1, Box #2 and Box#3. Building the system to 24 phone lines and 34 extensions with 8 hours of recording time adn 56 port voicemail.
• Includes 4 Box cable kit and 1 year warranty.